| Title |
Design of SDINS Rapid Initial Alignment Technique Robust to the Pyro-shock in Multi-Launch Rocket System |
| Authors |
이형섭(Lee, Hyung-Sub) ; 한경준(Han, Kyung-Jun) ; 이상우(Lee, Sang-Woo) ; 유명종(Yu, Myeong-Jong) |
| DOI |
https://doi.org/10.5370/KIEE.2016.65.6.1038 |
| Keywords |
초기정렬 ; 전달정렬 ; 수평혼합정렬 Initial alignment ; Transfer alignment ; Horizontal alignment ; SDINS |
| Abstract |
In this paper, a SDINS(Strapdown Inertial Navigation System) rapid initial alignment technique robust to the pyro-shock in multi-launch rocket system is proposed. The proposed method consists of three steps. Firth, transfer alignment is performed to estimate misalignment between MINS(Master INS) and SINS(Slave INS), and the estimated misalignment is written in the memory when transfer alignment is completed. Next, the pre-filtering process is performed to get rid of the acceleration error induced by launcher vibration. Finally, the horizontal alignment is performed to compensate misalignment variation caused by pyro-shock. We verified the performance of the proposed alignment method comparing with the conventional transfer alignment method. The simulation shows that the proposed initial alignment technique improves alignment performance. |